Hi! 

Did you follow the entire process instructed in Aximmetrys official documentation? This article:

https://aximmetry.com/learn/virtual-production-workflow/preparation-of-the-production-environment-phase-i/obtaining-graphics-and-virtual-assets/creating-content/creating-content-for-aximmetry-de/ue5-how-to-install-third-party-code-plugins-for-unreal-editor-for-aximmetry/

Did you install visual studio and do all those steps? I had first difficulties to get it to work but after I finally focused on this article and followed all those steps it worked right away. 

Luma AI has been working really well in Live Sync mode and is incredible! Splats run very fast and are light on the system even when there's a ton of detail! Got very promising results already scanning our own splats as well. Very excited about this tech. 

Hope you can get it to work! 3DGS is a new exciting world to dive into :) 

Emil

Try modify:

C:\Program Files\Epic Games\UE_5.3\Engine\Plugins\Marketplace\LumaAI\Source\LumaRuntime\Private\LumaField.cpp

Line 13: #include "../../LumaEditor/Public/Loaders/RaymarchMaterialParameters.h"

And do the same modify for LumaScene.cpp in the same folder

Line 8: #include "../../LumaEditor/Public/Loaders/RaymarchMaterialParameters.h"